Gas-engine igniter.



C. C. FRESTON.

GAS ENGINE IGNITER.

APPLICATION FILED MARL30, 1914.

Patented May 25, 1915.

Z, n m w MM-[Mano co 71% X) MAX CECIL G. PRESTON, OF TAMPICO, MEXICO.

GAS-ENGINE IGNI'IER.

manner.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed March 30, 1914. Serial No. 828,328.

To all whom it may concern:

Be it known that I, CECIL G. Fnns'ron, a citizen of the United States of Mexico, residing at Tampico, State of Tamaulipas, Mexico, have invented certain new and useful Improvements in Gas-Engine Igniters, of which the following is a specification.

This invention relates to improvements in gas engine igniters.

The primary object of the invention is to provide an automatically heated member for igniting the explosive mixture in a cylinder of an internal combustion engine at the proper time to give the impulse to the engine piston.

A further object of the device is to provide a member carried by the piston of an internal combustion engine and which member is made incandescent or partially so by the exhaust products of the cylinder.

The broad invention therefore'contemplates an elimination of the use of the spark plugs in the explosion chamber after the engine has been initially started and the provision of a means automatically heated by the exhaust gases for providing the necessary ignition for the continued operation of the engine.

With these general objects in view and others that will appear as the nature of the invention is better understood, the same consists in the novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the appended claims.

In the drawings forming a part of this application and in which like reference numerals designate corresponding parts throughout the several views:Figure 1 is a vertical transverse sectional View taken through the cylinder of an explosive motor and illustrating my device upon the piston therein. Fig. 2 is a transverse sectional view taken through the cylinder upon the line 22 of Fig. 1 in the direction indicated by the arrows. Fig. 3 is a detail sectional view of a portion of the piston head having one of the devices positioned therein, and, Fig. 1 is a perspective view of one of the ignition devices detached from the piston.

Referring more in detail to the drawing the cylinder 10 of an internal combustion engine of ordinary form is illustrated having the intake valve 11 for the explosive mixture and the exhaust outlet 12 for the exit of the products of combustion after the explosive impulse. The positions of said intake 11 and said outlet 12 in the said cylinder 10 may be varied according to the type or form of engine to which the device is applied.

The piston 13 reciprocating within the cylinder is provided upon its outer end with a cordately positioned baflie plate 1 1 so arranged as to be met by the cooler incoming explosive mixture entering the cylinder by the valve 11. The piston is also provided with threaded sockets 15 for the reception of screw plugs 18 having mounted thereon any desired form of means adapted to be heated by the exhaust gases and herein illustrated as tubular members 16 employing two in number and positioned convergently upon the head of the piston. As illustrated, these members may be provided with one inclined end 17 but it is to be understood that the invention broadly contemplates any form of member mounted upon the head of the piston and adapted to be rendered incandescent by the exhausted products of combustion and thereby forming an ignition member automatically heated for the purpose of igniting the explosive mixture upon proper compres sion.

It will. be readily understood that having once started the explosive motor in operation in the usual manner, the members 16, shown in the drawings as being positioned ad acent the exhaust port 12 when the piston reaches the lowermost point of its travel, the said ignition members will become heated and are in a position to ignite the charge upon the upper compression stroke. the cooler incoming mixture from the inlet 11 being in a degree prevented from contacting said heated member 16 to cool the same by reason of said baflie plate 14 positioned transversely of the piston head.

l/Vhile a single form of the invention is illustrated, it is nevertheless evident that minor details of the device may be changed as well as the proportion and form of elements without departing from the spirit and scope of the invention as set forth in the appended claims.

What I claim as new is 1. An explosive motor comprising a cy1- inder having an inlet port and an exhaust port, a piston adapted for reciprocation within said'cylinder, an ignition member of incandescent type mounted upon the head of said piston and adapted for positioning adjacent the exhaust port during the exit of the spent gases therethrough, and a bafile plate carried by the piston opposite the ignition members positionable opposite the inlet port of the cylinder'at one point in the stroke of the piston. I s.

2. An igniter for explosive motors comprising in combination with a cylinder having inlet and exhaust ports on opposite sides thereof and a piston reciprocating in said cylinder, of a baflie plate upon said piston adjacent the inlet port side of the cylinder, and ignition members of incandescent type carried by the piston head adjacent the exhaust port side of the cylinder.

3. An igniter for explosive motors comprising the combination with a cylinder having an inlet port on one side and an exhaust port on the opposite side, and a reciprocating piston within said cylinder, of a battle plate mounted upon and forming substantially a cord upon the piston head, and members adapted to be rendered incandescent by the exhaust gases mounted upon said head opposite the baffle plate.

4. An igniter comprising in combination with an engine piston, of tubular ignition members of incandescent type threaded into the head of said piston and positioned adjacent one side thereof, and a bafiie plate carried by said piston opposite said ignition members.

5. An igniter, comprising in combination with an engine piston, of tubular members threaded into the head of said piston and positioned adjacent one side thereof, said members belng convergent and having pointed approaching ends, and a baffle plate spanning the opposite side of the piston head.

6. An igniter comprising in combination with a cylinder having an inlet port on one side and an exhaust port on the opposite side thereof, of a piston reciprocating in said cylinder, a projecting 'baflie plate mounted at one side of the piston head and forming a substantial cord thereof and positionable opposite the inlet port of the cylinder at one point in the stroke of the piston, and tubular convergent members of incandescent type mounted upon said piston head opposite said baflle plate and adapted for positioning adjacent said exhaust port upon another position of the piston. I

In testimony whereof I have affixed my signature in presence of two witnesses.

cEoIL o. FRESTON.

Witnesses:

W. J. STARKE, I. LE ROY LAYTON.

, Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratentl,

' Washington, D. O. V 

